Experience with Quadz or Edge Mileage Boxes

[Hobart]

My VA gave up the ghost - I don't want to add much power; but I don't find many comments on these boxes. I'm also considering going directly to Bosh 275 injectors. Biggest interest is in squeezing miles out of the gallon.

 

[XtremeDiesel]

while the quad boes are very nice for the money the EDGE guarantees you a 10% increase in mileage. most people i've sold them to are very happy w/ them.

 

[Hobart]

Is than a money back guarantee;and how many days trial?